Juana, born November 6, 1479, was the daughter of
Isabella I of Castile and
Ferdinand II of Aragon. On October 20, 1496, at the age of 16, she married
Philip, son of
Maximilian I, Holy Roman Emperor. He was known as Philip the Handsome or Philip the Fair. In their nine years of marriage she gave birth to six children. Due to deaths in the family she became the heiress to the two Spanish kingdoms. When her mother died in 1504 she became Queen of Castile and Philip became King
Philip I of Castile. Her father Ferdinand of Aragon, attempting to keep control of Castile, argued that Juana was mentally unstable and was named her guardian. Her husband Philip resisted Ferdinand's maneuvering. In 1506 Philip and Ferdinand formally agreed that Juana should be excluded from government. A few months later Philip died of
typhoid fever. She attempted to retain power as Queen of Castile but was unable to secure her position, and power was handed over to her father Ferdinand. She refused to sign the abdication papers, so she remained as the titular queen, but was confined to a
nunnery. All authority was exercised in her name by her father, and after his death, by her son and heir Charles, who later became
Charles V, Holy Roman Emperor. She was kept in confinement at the Convent of Santa Clara at
Tordesillas, where she died at the age of 75. ==Synopsis==